Results 81 to 90 of about 17,719 (230)

Short-Duration X-ray Transients Observed With WATCH on Granat: Are Some of Them Related to Stellar Flares? [PDF]

International Astronomical Union Colloquium, 1995
AbstractDuring 1990-92, the WATCH all-sky X-ray monitor on GRANAT has discovered 6 short-duration X-ray transients. We discuss their possible relationship to peculiar stars. Only one source, GRS 1100-77 seems to be related to a T Tauri star.
Alberto J. Castro-Tirado, Søren Brandt, Niels Lund, Igor Lapshov, Rashid Sunyaev   +4 more
openaire   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

High Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov, I. L. Muzyukin, I. V. Uimanov, D. L. Shmelev, S. A. Barengolts   +4 more
wiley   +1 more source

Simbol-X capability of detecting the non-thermal emission of stellar flares [PDF]

, 2008
We investigate the capability of detecting, with Simbol-X, non-thermal emission during stellar flares, and distinguishing it from hot thermal emission. We find that flare non-thermal emission is detectable when at least ~20 cts are detected with the CZT ...
Argiroffi, C., Maggio, A., Micela, G.
core   +1 more source

Optical and near-infrared photometric monitoring of the transient X-ray binary A0538-66 with REM [PDF]

, 2016
The transient Be/X-ray binary A0538-66 shows peculiar X-ray and optical variability. Despite numerous studies, the intrinsic properties underlying its anomalous behaviour remain poorly understood.
Covino, S., Doroshenko, V., Ducci, L., Mereghetti, S., Santangelo, A., Sasaki, M.   +5 more
core   +2 more sources

Effects of X-ray irradiation and disc flaring on the [Ne ii] 12.8 μm emission from young stellar objects [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
9 pages, 8 figures.
Schisano, E., Ercolano, B., Güdel, M.
openaire   +4 more sources

Efficacy and Safety of Elagolix Versus Dienogest for Treatment of Moderate‐to‐Severe Endometriosis Pain: A Phase III, Multicentric, Double‐Blind, Active‐Controlled, Non‐Inferiority Study

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Objective To compare the efficacy, safety and tolerability of elagolix with dienogest in women with moderate‐to‐severe endometriosis‐associated pain. Design A multicentre, double‐blind, double‐dummy, randomised, parallel‐group, active‐controlled, non‐inferiority phase III study. Setting Nineteen clinical centres across India.
Sneha Bhoir, Jaldhara Patel, Tushar Palve, Mrinal Kanti Dash, Sweety Saigal, Gourisankar Kamilya, Shalini Srivastava, Kartikbhai Savalia, Tanusree Gupta, Deepa Choudhary, Manohar Rangaswamy, Vidya V Bhatt, Neena Gupta, Malathi Ponnuru, Parul Shah, Apurva Shetty, Shruti Saha, Reshma Quadros, Sucheta Pandit, Dipak Patil, Piyush Patel, Pravin Ghadge, Lalit Lakhwani, Suyog Mehta, Sadhana Joglekar   +24 more
wiley   +1 more source

X-Ray Emission of Nearby Low-mass and Sunlike Stars with Directly Imageable Habitable Zones

The Astrophysical Journal Supplement Series
Stellar X-ray and UV radiation can significantly affect the survival, composition, and long-term evolution of the atmospheres of planets in or near their host star’s habitable zone (HZ).
Breanna A. Binder, Sarah Peacock, Edward W. Schwieterman, Margaret C. Turnbull, Azariel Y. Virgen, Stephen R. Kane, Alison Farrish, Katherine Garcia-Sage   +7 more
doaj   +1 more source

Are Coronae of Magnetically Active Stars Heated by Flares? III. Analytical Distribution of Superimposed Flares

, 2003
(abridged) We study the hypothesis that observed X-ray/extreme ultraviolet emission from coronae of magnetically active stars is entirely (or to a large part) due to the superposition of flares, using an analytic approach to determine the amplitude ...
Benz A. O., Collura A., de Jager C., Heyvaerts J., Heyvaerts J., Isliker H., Kaspar Arzner, Manuel Gudel, Marsh E., Narain U., Narain U., Pearce G., Shimizu T., Vlahos L.   +13 more
core   +1 more source

Temporal Association Between COVID‐19 Vaccination and HBsAg Loss in Chronic Hepatitis B Infection: An Interrupted Time Series Analysis

Alimentary Pharmacology &Therapeutics, EarlyView.
In 59,946 chronic hepatitis B patients followed over 23 years, COVID‐19 vaccination rollout was temporally associated with a 56% increase in HBsAg loss rates (peak 1.27 per 100 person‐years in 2022), followed by gradual waning. Negative control outcomes showed no similar pattern, supporting biological specificity. ABSTRACT Background and Aims Hepatitis
Jonggi Choi, Allison Carroll, Vy H. Nguyen, Megan Michta, Xuan Q. Zhang, Young‐Suk Lim, Raymond T. Chung   +6 more
wiley   +1 more source

Stellar flare detection in XMM-Newton with gradient-boosted trees

Astronomy & Astrophysics
Context. The EXTraS project, based on data collected with the XMM-Newton observatory, provides us with a vast amount of light curves for X-ray sources. For each light curve, EXTraS also provides us with a set of features.
Pasquato Mario, Marelli Martino, De Luca Andrea, Salvaterra Ruben, Carenini Gaia, Belfiore Andrea, Tiengo Andrea, Esposito Paolo   +7 more
doaj   +1 more source